| WANG Min,HUANG Yan-bin,WANG Qi-chao,LU Shi-yong.Microstructure and Properties of Ni-P-Carbon Nanotube Composite Coat-ing Subject to Electroless Plating[J],46(5):111-115 |
| Microstructure and Properties of Ni-P-Carbon Nanotube Composite Coat-ing Subject to Electroless Plating |
| Received:October 11, 2016 Revised:May 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.05.019 |
| KeyWord:nickel-phosphorus electroless plating carbon nanotubes composite coating resistance to friction and wear corrosion resistance |
| Author | Institution |
| WANG Min |
Changping Sergeancy School, Equipment Institute, Beijing , China |
| HUANG Yan-bin |
Academy of Armored Forces Engineering, Beijing , China |
| WANG Qi-chao |
Academy of Armored Forces Engineering, Beijing , China |
| LU Shi-yong |
Military Agent's Room of PLA in 618 Factory, Beijing , China |
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| Abstract: |
| The work aims to study effects of carbon nanotubes (CNTs) on microstructure and properties of Nickel-phosphorus electroless plating. Carbon nanotubes were added in plating bath, and Nickel-phosphorus-carbon nanotubes (CNTs) composite coatings were prepared by electroless plating on 45# steel. Morphology and structure of composite coating were analyzed with scanning elctron microscope and X-ray diffractometer, respectively. Friction and wear properties of the composite coating were studied with surface property tester for multifunctional materials. The electrochemical corrosion behavior of Ni-P-CNTs coatings in 3.5 wt% NaCl solution was studied by performing potentiodynamic polarization. Ni-P-CNTs chemical composite coating was amorphous with CNTs uniformly embedded in coating substrate. The abrasion resistance test showed that wear rate of Ni-P-CNTs composite coatings was 7.6×10−11 m3/(N•m) lower than that of Ni-P coating, and its average friction factor decreased by 0.074. In the electrochemical corrosion test, corrosion potential of Ni-P-CNTs composite coatings (Ecorr) was 222 mV higher than that of Ni-P plating while its corrosion current (Jcorr) was 5.234×106 A/cm2 smaller than that of Ni-P coatings. Carbon nanotubes can fill gaps between the nickel-phosphorus non-cell and improve microstructure of composite coatings, so as to provide better resistance to friction, wear and corrosion for Ni-P-CNTs electroless composite coatings. |
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